Internal combustion engine and the like



Sept. 27, 1932. K. BASSLER INTERNAL COMBUSTION ENGINE AND THE LIKE FiledJune 26, 1950 Fig.2.

Fig.1.

Fig.4.

His Attorney.

with good cooling, owing to the points being p heat, such as copper,aluminum and the like,

KURT BASSLER, or snatrmwnsrnivn, GER-MANY,

I [Q ber.. Thus, for. example,

Patented Sept. 27, 1932 COMPAN "A CORPORATION on NEW, Yoax H IER'NA;COMBUSTION ENGINE AND H L K 1 Application filed June 26, 193Q,-Seria'1No. 464,027, and in Germany June a r, 192a It often happens that'hotmachinery parts have to be packed against the surrounding spaces bymeans of a packing made of organic substances such as, ,forinstance,;rub-

' it is usual to pack the cylinder liners of internal combustionengines, more particularly engines, against the cylinder frames andtheir cooling-water .spaces'by :placing cords 101' 1D rings made oforganic substances, either ata low initial tension on the liners, ,orinto grooves turned in the liners, and then, "with the cords or rings inplace, introduce'the liners into the cylinder framewhere the cords orrings come to, lie against'a corresponding heel or projection on theframe. the; rings or cords are housed in annular grooves in thecylinderframe and are pressed together by means of stufiin'g boxfollower rings. In all these forms; of construction the ackin rin s madeof or anic substances lie 7 b 13 close to the liners. If now thesepoints are particularly hot, owing to insufiicient cooling, or, in thecase oftwo stroke cycle engines,

' in the vicinity of the exhaust ports, the packhot wall.

mg rings become hardand brittle after a fairly short period andlosetheir tension. The result is that the packing is no longertight, thusgiving rise to the danger of cooling water coming into the cylinder orof combustible gases passing into the cooling water, both of which areundesirable. f V

According to the present invention, at all those packing points, w'herethe packing material, made of organic substances, would come intocontact with wa'lls that are too hot, the the walls by means of a goodconductor of which is rigidly connected to the hot machinery part. Thisconductor ofh'eat, being in close contact with the'hot wall conducts aportion of the heatof the wall away towards the outside, so that theconductorof'heat assumes a temperature lower than that Fof theConsequently, the packing inaterial, lying close up against theconductor of .heat, is 'protecmd. The conductance of the h a incre wh n?t cond tqr iihe of twostroke cycle 7 a per portion ofFig. l; and Fig.

Sometimes held by followerrlngs 16.

packing material is separated from.

Assrclxioa ToeENnaA mama least partially brought into contact with Isfame.-' 4 Referringto the drawing, Fig. ,1 showsby way of example alongitudinal, sectional view of a two-strokeinternal combustion engineprovided with a packing construction em bodying my invention; Figs. 2 to6 are detail sectional views, onan enlarged scale, show-- ingvariousiarrangements for carrying out. the invention, the arrangementsshown in Fig. Z'being similar to that shown in the up 7 is as tiona viewthrough the structureshownin Fig. 6.

Referring to [the drawing,

cylinder liner of a double acting two-stroke internal combustion engine,the liners being inserted into the end casing structures 3 and 4t andthe central casing structure 5. The cylinder liners are spaced apartsomewhat as isindicatedat 6, in order to permit of their expansion. 7indicates thescavenging ports and 8 the exhaust ports for the cylinder..Be-

water cooling spaces 9, 10 and 1 1 which are connected together byannular rings 12 which defineconnecti-ng passages 13. In order toprevent leakage of cooling water from vthe cooling water s aces into thescavenging and exhaust ports f T iu gbqx are shown inFig.v lof thedrawing.. I For protecting the packing ringsf; from as v l indicatestheupper cylinder liner and 2 indicates the lower and 8,stufiing boxes 14are T V provided,eachcomprising packing ringsl5 the relatively hightemperature of the cylin- 'der liner there is provided, accordingtothe 7present invention, intermediate protecting, rings or inserts 17- formedof some good heat conducting material such. as copper, aluminum and, thelike. Referring to Fig. 2, it will beseenthat the packing rings 15engage .the lower portion of the protecting ring '17,

the protecting ringbeing located between the ra in to the protectingringindicated at portion with which the packing rings 15 en'-" gage. In thearrangement shown in Fig. 2

the ring 17 is made in several pieces and is secured 1n a dove-tailannular groove n the liner 1.

Fig. 3 shows an arrangement similar to that shown in Fig. 2, except thattheintermediate protecting 'rin'g "18, corresponding form of a solidring which is drawn hot onto the cylinder liner, the lower end 19 beingimbedded-in an annular groove in the cylinderliner. r a I V I Thearrangement shown 1n Fig. 4. 1s s1m1-- larto' that shown inFig. '3except that the protecting ring 20, corresponding to the protecting ring18 of Fig. 3, isrelieved as is 21 so as to have but limited contactwith'the cylinder liner 1, this arrangement serving tovminimize thetransferof heat from the wall cylinder liner to the "ring.

The'modification shown in Fig. 5 is similar to that shown in Fig. 45except that the lower portion of Fig. 1.

. upper end of protecting ring 22, corresponding to the protecting ringof Fig. 4:, is spaced from the cylinder wall'as is indicated at '23 andis provlded with an opening 24 to permit of the circulation of coolingliquidbetween the upper portion ofthe' ring and-the cylinder liner 1.

In the modification shown in Figs. 6 and 7, the intermediate protectingring 25 is connected to the cylinder liner atits two ends only wherebythere is provided an annular space 26 through which-cooling water maycirculate by way of the openings 27. This construction, is similar tothat shown at the In each of the modifications illustrated, it will beseen that there is provided between the packing rings, which may beformed of an organic substance, and the cylinder liner,

an intermediate protecting ring which is a good conductor of heatQIId'WlllClYSGlVBS to maintain a surface of lower temperature with whichthe substance of the packingrings engages. Asa result, thepackingrings'are protected from'the high temperature of'the cylinder. liner. f

' In ccordance with the provisions" of the patent statute, of operationof my invention, together with the apparatus which I now consider'torepresent the best embodiment thereof ;but I desire to have itunderstood that the apparatus shown is only'illustrat ive and that'theinventionfniay be carried outby other means.

. What claim as'new and desire to'secure by Letters Patent of the UnitedStates isz 1. The combination with a-machine part protecting ringprojecting beyond said liptFig. 2, is in the conducting material.

. intermediate protecting I have described the principle which issubjected to high temperature, a second machine'part which surrounds it,and a packing ring between the two parts, of an intermediateprotectingring of good heat conducting material located between thepacking ring and the first named part and withv which the-packingi ringengages, said ing ring, and means for cooling the project ing partOfsald' packing ring;

2. The-"combinationwith a machine part packwhich is subjectedtohightemperature, a

second machine part'which surrounds it, and I ,a packlng-r ngobetweenthetwo parts, of an intermediate protectin ring ofgood heat ocated betweenthe packing. ring and theyfirst named partand with which thei-packingring engages, said intermediate; ring extending beyond thepacking-ring to provide a heat. dissipating surface- WThe'combinationwith a machinepart which is subjected to hightemperature, a second machine part which surrounds it, and apacking ringbetween the two parts, of an ring of good heat conducting materiallocated betweenthe packing ring and; the first named part and with whichthepacking ring engages, said I intermediate ring being in part spaced.from

said first named machine part and extending beyond said packing ringwhereby it is adapted to bev broughtjinto contact witha cooling.medium.:-

- ,4. The combination with a machine part which. is subjected to hightemperature, a

second machine part which surrounds it, and

packing ring between the two parts, of an intermediate protecting; ringof good heat conducting material *located between the packing ringandthe first named part and with which the packing ring engages, saidintermediatering being in part spaced from said first named machine partand beingpro- ;vided withopenin'gs for the .circulation of acoolingmediumi; j n 5.-.Thecombination with .a machine part which is subjectedto high temperature, asec 'ond machine part which surrounds it, and apacking ring between the two. parts, of an intermediate protectingringof good heat conducting materiallocated between the packingjrijng andthe; first named part and with which the packing ring engages,;saidintervmediate ring extending beyond the packing ring to provide a heat.dissipating surface, .and meanswh'ereby said surface is subjected to theactionof acooling medium.. 6. The combination with. a machinepart which.:is subjected to-high temperature, a secondimachine part adjacentthereto, a packing substance between the twoand a'wall definingfl'acooling'chamber with the first named machine part, of aninterm'ediateprotecting layer of good heat conducting ma- 'ios terial located betweenthe packing substance 7 and the first named part and in thermalengagement with the first named part and extending beyond said packingsubstance into said cooling chamber whereby heat transferred from saidfirst named machine part to said protecting layer is transferred to acooling medium passed through said cooling 7 chamber.

In Witness whereof, I have hereunto set my hand this 16th day of June,1930.

KURT BASSLER.

